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                                                                    EXHIBIT 23.3

                       CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the incorporation by reference in this Registration
Statement on Form S-4 of F.N.B. Corporation of our report dated January 23, 2001
except for Note 22, which is dated February 26, 2001, relating to the financial
statements, which appears in Promistar Financial Corporation's 2000 Annual
Report to Shareholders, which is incorporated by reference in its annual report
on Form 10-K for the year ended December 31, 2000. We also consent to the
reference to us under the heading "Experts" in such Registration Statement.


PricewaterhouseCoopers LLP

/s/ PricewaterhouseCoopers LLP

Harrisburg, Pennsylvania
September 5, 2001